2530537778 has 8 divisors (see below), whose sum is σ = 3817748268. Its totient is φ = 1257955024.

The previous prime is 2530537759. The next prime is 2530537811. The reversal of 2530537778 is 8777350352.

2530537778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2331248089 + 199289689 = 48283^2 + 14117^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3656501 + ... + 3657192.

Almost surely, 2^2530537778 is an apocalyptic number.

2530537778 is a deficient number, since it is larger than the sum of its proper divisors (1287210490).

2530537778 is a wasteful number, since it uses less digits than its factorization.

2530537778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7313868.

The product of its (nonzero) digits is 1234800, while the sum is 47.

The square root of 2530537778 is about 50304.4508766371. The cubic root of 2530537778 is about 1362.7126110769.

The spelling of 2530537778 in words is "two billion, five hundred thirty million, five hundred thirty-seven thousand, seven hundred seventy-eight".